orb

Noun

• an object with a spherical shape
  • a ball of fire
    

• the ball-shaped capsule containing the vertebrate eye

Verb

• move in an orbit
  • The moon orbits around the Earth
    
  • The planets are orbiting the sun
    
  • electrons orbit the nucleus
    

Related words

• Synonyms: 
  ball , globe , eyeball , orbit , revolve